// Copyright 2021 - 2024 Matrix Origin
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package frontend

import (
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
)

func TestNewMigrateController(t *testing.T) {
	mc := newMigrateController()
	assert.NotNil(t, mc)
}

func TestCloseOnly(t *testing.T) {
	mc := newMigrateController()
	assert.NotNil(t, mc)
	mc.waitAndClose()
}

func TestFirstCloseThenMigrate(t *testing.T) {
	mc := newMigrateController()
	assert.NotNil(t, mc)
	mc.waitAndClose()
	assert.Equal(t, mc.beginMigrate(), false)
}

func TestFirstMigrateThenClose(t *testing.T) {
	mc := newMigrateController()
	assert.NotNil(t, mc)
	assert.Equal(t, mc.beginMigrate(), true)
	mc.endMigrate()
	mc.waitAndClose()
}

func TestCloseWaitMigrate(t *testing.T) {
	mc := newMigrateController()
	assert.NotNil(t, mc)
	assert.Equal(t, mc.beginMigrate(), true)
	go func() {
		<-time.After(time.Second)
		mc.endMigrate()
	}()
	mc.waitAndClose()
}
